This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages)(Learn how and when to remove this template message)
In theoretical physics, the word meta-operator is sometimes used to refer to a specific operation over a combination of operators, as in the example of path-ordering. A meta-operator is different from an operator in that it does not correspond to a linear transform in the Hilbert space.
|This physics-related article is a stub. You can help Wikipedia by expanding it.|